Configuration And Operation - Novell LINUX ENTERPRISE SERVER 11 - ADMINISTRATION Administration Manual

application concerns staging servers. These are servers that store complete directory
trees of Web servers that are regularly mirrored onto a Web server in a DMZ.

26.4.1 Configuration and Operation

rsync can be operated in two different modes. It can be used to archive or copy data.
To accomplish this, only a remote shell, like ssh, is required on the target system.
However, rsync can also be used as a daemon to provide directories to the network.
The basic mode of operation of rsync does not require any special configuration. rsync
directly allows mirroring complete directories onto another system. As an example, the
following command creates a backup of the home directory of tux on a backup server
named sun:
rsync -baz -e ssh /home/tux/ tux@sun:backup
The following command is used to play the directory back:
rsync -az -e ssh tux@sun:backup /home/tux/
Up to this point, the handling does not differ much from that of a regular copying tool,
like scp.
rsync should be operated in "rsync" mode to make all its features fully available. This
is done by starting the rsyncd daemon on one of the systems. Configure it in the file
/etc/rsyncd.conf. For example, to make the directory /srv/ftp available with
rsync, use the following configuration:
gid = nobody
uid = nobody
read only = true
use chroot = no
transfer logging = true
log format = %h %o %f %l %b
log file = /var/log/rsyncd.log
[FTP]
path = /srv/ftp
comment = An Example
Then start rsyncd with rcrsyncd start. rsyncd can also be started automatically
during the boot process. Set this up by activating this service in the runlevel editor
provided by YaST or by manually entering the command insserv rsyncd. rsyncd
File Synchronization 369